This ball pen writes smoothly.
这圆珠笔写起来很流畅。
This ball pen is for Yang Ling.
这支圆珠笔是给杨玲的。
You mean this ball pen is yours?
你的意思是这支笔是你的？
这枝圆珠笔是给你的。
This ball pen is for Yang Ling. All right.
这支圆珠笔是给杨玲的。
这支圆珠笔是红色的。
This type of ball pen is used as a knife for cutting paper by teenagers.
这款圆珠笔被青少年当作小刀用来裁纸。
This article presents the structure of ball pen cores and its principle of operation. Some Suggestions are given to improve its qualities.
本文介绍了圆珠笔芯的构造及其工作原理，提出了提高圆珠笔芯质量的某些途径。
This article presents the structure of ball pen cores and its principle of operation. Some Suggestions are given to improve its qualities.
本文介绍了圆珠笔芯的构造及其工作原理，提出了提高圆珠笔芯质量的某些途径。
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